I'm a believer in compound on the threads - despite NGK saying it's not needed....Also should I be applying a thin coat of anti-seize to the plug threads?
Not sure what you are referring to. All recent Subarus have a coil and boot manufactured as a single unit. One for each cylinder. There are no "high tension cords" (spark plug wires?) Just a low-voltage connector for the wiring harness to snap into.I looked up the high tension cords for Subaru and it appears that they do not sell just the rubber boot portion.
The complete cable system must be purchased. There are other makers, like Bosch I believe. I prefer OEM. Does anyone have other information on this?